1 解決策
Hi Eduardo,
Thanks for updating
We should focus on execution time of the function vMMAC_Enable(). My first question is it's anormal or not.
> How are you setting/configuring this timer? What is the procedure you are using to measure this time/interval? Which events are you using to trigger the measure?
Problem is NOT timer use. I double check with GPIO control and see with oscilloscope. (note: VCC level is 0V)
Here is the abbreviated code.
#include "fsl_gpio.h"
#define DGC_PORT 19 // DIP PIN#27.
void DGC_Init() {
// set the pin as input
gpio_pin_config_t gpio_conf = { kGPIO_DigitalOutput, 1 /* 1 to HIGH */ };
GPIO_PinInit(GPIO, 0, DGC_PORT, &gpio_conf);
}
static inline void __DGC_SetHi() { GPIO_PortSet(GPIO, 0, 1u << DGC_PORT); }
static inline void __DGC_SetLo() { GPIO_PortClear(GPIO, 0, 1u << DGC_PORT); }
int main(void) {
SYSCON->CODESECURITYPROT = 0x87654320;
BOARD_InitBootPins(); // configure IOCON->PIO[], customed
BOARD_BootClockRUN(); // clock configure (Xtal32M is enabeled later)
// set CPU clock as 32MHz
GPIO_PortInit(GPIO, 0);
DGC_Init();
__DGC_SetLo(); // SET GPIO PORT
vMMAC_Enable(); // THIS TAKES APPROX. 80ms
__DGC_SetHi(); // SET GPIO PORT
CLOCK_EnableClock(kCLOCK_Xtal32M); // can move to BOARD_BootClockRUN() when cold booting.
CLOCK_AttachClk(kXTAL32M_DIV2_to_ZIGBEE_CLK); // can move to BOARD_BootClockRUN() when cold booting.
...
}
void WarmMain() {
SYSCON->CODESECURITYPROT = 0x87654320;
BOARD_InitBootPins(); // configure IOCON->PIO[], customed
BOARD_BootClockRUN(); // clock configure (Xtal32M is enabeled later)
// set CPU clock as 32MHz
__DGC_SetLo(); // SET GPIO PORT
vMMAC_Enable(); // THIS TAKES APPROX. 80ms
__DGC_SetHi(); // SET GPIO PORT
CLOCK_EnableClock(kCLOCK_Xtal32M); // MUST PLACE HERE, OTHERWISE HUNGs
CLOCK_AttachClk(kXTAL32M_DIV2_to_ZIGBEE_CLK);
...
}
> Could you please provide more details about the timer you are using?
- It happens both Cold Starting and Warm Starting.
- WTIMER counter can be used split time measurement (it is very accurate by confirming with oscilloscope.)
- project was made from the project template.
- set "__mac_buffer_base = 0x04000000;" in ld file, which required by MiniMac.
- I tried another MiniMac lib (2.6.3, MiniMac_??.a ), but all the same.
- I tried 48MHz CPU clock, no significant change (slightly getting faster).
Thank!
> Just to confirm, which template/example project are you using as base for your development?
Both are from SDK2_6_10 sample code and I tried to minimize the modification.
- ledblinky --> call vMMAC_Enable() on coldboot, check with PIO.
- powerdown_demo --> call vMMAC_Enalbe() both on coldboot and warm boot, check with WTIMER count at warmboot.
